Spring-wheel.



G. 'M. BAOKMAN.

SPRING WHEEL.

APPLIGATION FILED JULY 13, 1910.

981,831, Patented Jan.17,1911.

' #Horvz eg- 3 vented a new and useful the like.

Fig. 1. Fig. 3

UNITED srarngs PATENT oration.

CHARLES M. BacKMAN, or LOS ANGELES COUNTY, CALIFORNIA.

SPRING-WHEEL.

To all whom it may concern:

Be it known that I, CHARLES M. BACK- MAN, a citizen of the Unit-ed States, residing California, have 1n- Spring-Whe'el, of whichthe following is a specification;

An object of my invention is to provide a spring attachment for vehicle wheels which will t'ake the place of pneumatic tires and in Los Angeles count-y,

Referring to the drawings: Figure 1 is a fragme'ntal side elevation of a vehicle wheel provided with my spring attachment. Fig. 2 is a sectional detail on the line 2-2 of is a view of the device as it 'ap ears when, stamped from a sheet ofsteel.

\efeirring more in detail to the drawings 1 indicates a vehicle wheel provided 'with the ordinary felly 2 and a rim Mounted upon the outside circumference of the telly 2 and equidistant from each other are a series of spring butters or cushions 4, said spring butters at. consisting'of a tread portion 5, concentric with the outer circumference of the telly 2, the end portions 6 being 1 wardly to form bent downwardly toward the axis of the wheel, thence curved upwardly and inthe spring portions 7 the 'flattened portions 8 fitting upon the rim 3,

saidportions: 8 having ears 9 and 10 bent -down\'vardly around the telly 2 and said portions 8 also being provided tions 11 toreceive bolts 12 which extend through the folly 2 and fasten the spring 5 buffet-s4 rigidly with the fellyo2. The trea( portion 5 of the spring buffer at is preferably Specification of Letters Patent. Application filed July 13, 1910. Serial No. 571,693.

with perfora- Patented Jai1. 17, 911.

bent portions 6, as shown in Figs. 2 and 3.

In Fig. 3, the dotted linesiridicate where the blank is to be bent to form-thespring butter. v i

It is obvious that a wheel provided with be as effective and can stand much more abuse. than a pneumatic tire.

The details of constructionmay be varied in many ways without departing from the spirit of my invention. The essentials are: a rigid base rim; and a sectional yielding rim; each section con'iprising acentral tread portion, return bonds at the ends of the CHARLES M. BACKMAN.

\Vitnesses:

' FLoRnNoE W'ILLTAMS.

O. E. SMITH.

of a tread portion concentr c wider in cross section than the downwardly a series of these resilient spring bufi'ers will P tread portion; and attachingfclipsfen b ac 

